File content as of revision 5:95f70ebfe61f:

/*
MiniTLS - A super trimmed down TLS/SSL Library for embedded devices
Author: Donatien Garnier
Copyright (C) 2013-2014 AppNearMe Ltd

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*//**
 * \file crypto_macros.h
 * \copyright Copyright (c) AppNearMe Ltd 2013
 * \author Donatien Garnier
 */

#ifndef CRYPTO_MACROS_H_
#define CRYPTO_MACROS_H_

#ifdef __cplusplus
extern "C" {
#endif

#include "core/fwk.h"
#include "inc/minitls_config.h"

#define XMEMCPY memcpy

#define CONST64(n) n ## ULL
typedef uint64_t ulong64;
typedef uint32_t ulong32;

/* ---- HELPER MACROS ---- */
#ifdef ENDIAN_NEUTRAL

#define STORE32L(x, y)                                                                     \
     { (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255);   \
       (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }

#define LOAD32L(x, y)                            \
     { x = ((unsigned long)((y)[3] & 255)<<24) | \
           ((unsigned long)((y)[2] & 255)<<16) | \
           ((unsigned long)((y)[1] & 255)<<8)  | \
           ((unsigned long)((y)[0] & 255)); }

#define STORE64L(x, y)                                                                     \
     { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255);   \
       (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255);   \
       (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255);   \
       (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }

#define LOAD64L(x, y)                                                       \
     { x = (((ulong64)((y)[7] & 255))<<56)|(((ulong64)((y)[6] & 255))<<48)| \
           (((ulong64)((y)[5] & 255))<<40)|(((ulong64)((y)[4] & 255))<<32)| \
           (((ulong64)((y)[3] & 255))<<24)|(((ulong64)((y)[2] & 255))<<16)| \
           (((ulong64)((y)[1] & 255))<<8)|(((ulong64)((y)[0] & 255))); }

#define STORE32H(x, y)                                                                     \
     { (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255);   \
       (y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); }

#define LOAD32H(x, y)                            \
     { x = ((unsigned long)((y)[0] & 255)<<24) | \
           ((unsigned long)((y)[1] & 255)<<16) | \
           ((unsigned long)((y)[2] & 255)<<8)  | \
           ((unsigned long)((y)[3] & 255)); }

#define STORE64H(x, y)                                                                     \
   { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255);     \
     (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255);     \
     (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255);     \
     (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); }

#define LOAD64H(x, y)                                                      \
   { x = (((ulong64)((y)[0] & 255))<<56)|(((ulong64)((y)[1] & 255))<<48) | \
         (((ulong64)((y)[2] & 255))<<40)|(((ulong64)((y)[3] & 255))<<32) | \
         (((ulong64)((y)[4] & 255))<<24)|(((ulong64)((y)[5] & 255))<<16) | \
         (((ulong64)((y)[6] & 255))<<8)|(((ulong64)((y)[7] & 255))); }

#endif /* ENDIAN_NEUTRAL */

#ifdef ENDIAN_LITTLE

#define STORE32H(x, y)                                                                     \
     { (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255);   \
       (y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); }

#define LOAD32H(x, y)                            \
     { x = ((unsigned long)((y)[0] & 255)<<24) | \
           ((unsigned long)((y)[1] & 255)<<16) | \
           ((unsigned long)((y)[2] & 255)<<8)  | \
           ((unsigned long)((y)[3] & 255)); }

#define STORE64H(x, y)                                                                     \
   { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255);     \
     (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255);     \
     (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255);     \
     (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); }

#define LOAD64H(x, y)                                                      \
   { x = (((ulong64)((y)[0] & 255))<<56)|(((ulong64)((y)[1] & 255))<<48) | \
         (((ulong64)((y)[2] & 255))<<40)|(((ulong64)((y)[3] & 255))<<32) | \
         (((ulong64)((y)[4] & 255))<<24)|(((ulong64)((y)[5] & 255))<<16) | \
         (((ulong64)((y)[6] & 255))<<8)|(((ulong64)((y)[7] & 255))); }


#ifdef ENDIAN_32BITWORD

#define STORE32L(x, y)        \
     { ulong32  __t = (x); XMEMCPY(y, &__t, 4); }

#define LOAD32L(x, y)         \
     XMEMCPY(&(x), y, 4);

#define STORE64L(x, y)                                                                     \
     { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255);   \
       (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255);   \
       (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255);   \
       (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }

#define LOAD64L(x, y)                                                       \
     { x = (((ulong64)((y)[7] & 255))<<56)|(((ulong64)((y)[6] & 255))<<48)| \
           (((ulong64)((y)[5] & 255))<<40)|(((ulong64)((y)[4] & 255))<<32)| \
           (((ulong64)((y)[3] & 255))<<24)|(((ulong64)((y)[2] & 255))<<16)| \
           (((ulong64)((y)[1] & 255))<<8)|(((ulong64)((y)[0] & 255))); }

#else /* 64-bit words then  */

#define STORE32L(x, y)        \
     { ulong32 __t = (x); XMEMCPY(y, &__t, 4); }

#define LOAD32L(x, y)         \
     { XMEMCPY(&(x), y, 4); x &= 0xFFFFFFFF; }

#define STORE64L(x, y)        \
     { ulong64 __t = (x); XMEMCPY(y, &__t, 8); }

#define LOAD64L(x, y)         \
    { XMEMCPY(&(x), y, 8); }

#endif /* ENDIAN_64BITWORD */

#endif /* ENDIAN_LITTLE */

#ifdef ENDIAN_BIG
#define STORE32L(x, y)                                                                     \
     { (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255);   \
       (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }

#define LOAD32L(x, y)                            \
     { x = ((unsigned long)((y)[3] & 255)<<24) | \
           ((unsigned long)((y)[2] & 255)<<16) | \
           ((unsigned long)((y)[1] & 255)<<8)  | \
           ((unsigned long)((y)[0] & 255)); }

#define STORE64L(x, y)                                                                     \
   { (y)[7] = (unsigned char)(((x)>>56)&255); (y)[6] = (unsigned char)(((x)>>48)&255);     \
     (y)[5] = (unsigned char)(((x)>>40)&255); (y)[4] = (unsigned char)(((x)>>32)&255);     \
     (y)[3] = (unsigned char)(((x)>>24)&255); (y)[2] = (unsigned char)(((x)>>16)&255);     \
     (y)[1] = (unsigned char)(((x)>>8)&255); (y)[0] = (unsigned char)((x)&255); }

#define LOAD64L(x, y)                                                      \
   { x = (((ulong64)((y)[7] & 255))<<56)|(((ulong64)((y)[6] & 255))<<48) | \
         (((ulong64)((y)[5] & 255))<<40)|(((ulong64)((y)[4] & 255))<<32) | \
         (((ulong64)((y)[3] & 255))<<24)|(((ulong64)((y)[2] & 255))<<16) | \
         (((ulong64)((y)[1] & 255))<<8)|(((ulong64)((y)[0] & 255))); }

#ifdef ENDIAN_32BITWORD

#define STORE32H(x, y)        \
     { ulong32 __t = (x); XMEMCPY(y, &__t, 4); }

#define LOAD32H(x, y)         \
     XMEMCPY(&(x), y, 4);

#define STORE64H(x, y)                                                                     \
     { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255);   \
       (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255);   \
       (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255);   \
       (y)[6] = (unsigned char)(((x)>>8)&255);  (y)[7] = (unsigned char)((x)&255); }

#define LOAD64H(x, y)                                                       \
     { x = (((ulong64)((y)[0] & 255))<<56)|(((ulong64)((y)[1] & 255))<<48)| \
           (((ulong64)((y)[2] & 255))<<40)|(((ulong64)((y)[3] & 255))<<32)| \
           (((ulong64)((y)[4] & 255))<<24)|(((ulong64)((y)[5] & 255))<<16)| \
           (((ulong64)((y)[6] & 255))<<8)| (((ulong64)((y)[7] & 255))); }

#else /* 64-bit words then  */

#define STORE32H(x, y)        \
     { ulong32 __t = (x); XMEMCPY(y, &__t, 4); }

#define LOAD32H(x, y)         \
     { XMEMCPY(&(x), y, 4); x &= 0xFFFFFFFF; }

#define STORE64H(x, y)        \
     { ulong64 __t = (x); XMEMCPY(y, &__t, 8); }

#define LOAD64H(x, y)         \
    { XMEMCPY(&(x), y, 8); }

#endif /* ENDIAN_64BITWORD */
#endif /* ENDIAN_BIG */

#define BSWAP(x)  ( ((x>>24)&0x000000FFUL) | ((x<<24)&0xFF000000UL)  | \
                    ((x>>8)&0x0000FF00UL)  | ((x<<8)&0x00FF0000UL) )


/* 32-bit Rotates */
//#define ROLc ROL
//#define RORc ROR

/* rotates the hard way */
#define ROL(x, y) ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
#define ROR(x, y) ( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | ((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
#define ROLc(x, y) ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
#define RORc(x, y) ( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | ((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)

//#define ROL64c ROL64
//#define ROR64c ROR64

#define ROL64(x, y) \
    ( (((x)<<((ulong64)(y)&63)) | \
      (((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)64-((y)&63)))) & CONST64(0xFFFFFFFFFFFFFFFF))

#define ROR64(x, y) \
    ( ((((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)(y)&CONST64(63))) | \
      ((x)<<((ulong64)(64-((y)&CONST64(63)))))) & CONST64(0xFFFFFFFFFFFFFFFF))

#define ROL64c(x, y) \
    ( (((x)<<((ulong64)(y)&63)) | \
      (((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)64-((y)&63)))) & CONST64(0xFFFFFFFFFFFFFFFF))

#define ROR64c(x, y) \
    ( ((((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)(y)&CONST64(63))) | \
      ((x)<<((ulong64)(64-((y)&CONST64(63)))))) & CONST64(0xFFFFFFFFFFFFFFFF))

#ifndef MAX
   #define MAX(x, y) ( ((x)>(y))?(x):(y) )
#endif

#ifndef MIN
   #define MIN(x, y) ( ((x)<(y))?(x):(y) )
#endif

/* extract a byte portably */
#define byte(x, n) (((x) >> (8 * (n))) & 255)

#ifdef __cplusplus
}
#endif

#endif /* CRYPTO_MACROS_H_ */